I believe the correct answer is: material that the lens is
made from.
Lenses are engineered to have
specific focal lengths, besides the curvature of the two sides of a lens. The
focal range, the distance between your optic nerve and the retins in lens, of
the lenses is determined by the material that lenses are made from.
I play guitar in my free time dawg wbu
A radial or circular balance
Jackson Pollock was known for doing paintings of abstract on a floor. This guy was a major painter /influence in the expressionist movement.
